Saeed Jalili, secretary of Supreme National Security Council of Iran, made the remarks at a press conference shortly after the two- day nuclear talks in Istanbul between Iran and the so-called G5+1, including Britain, China, France, Russia, the United States and Germany, which failed to reach any agreement.

Iran has demanded the world powers to recognize its rights to develop nuclear program, enrich uranium and lift sanctions, before talks, which are considered as "preconditions" by EU foreign policy chief Catherine Ashton to block negotiation progress.

"These are not preconditions, but rights," Jalili said, calling for need for a common judgement between the parties in order to benefit negotiations.

Although the talks ended in stalemate even without a plan for new talks, Jalili emphasized Iran's desire for peaceful nuclear energy, saying the country was ready for cooperation on nuclear energy. He also expressed optimism in the nuclear fuel swap agreement between Iran, Turkey and Brazil.

In an earlier press conference, Ashton said that the G5+1 had approached Iran with an updated fuel swap agreement, but could not break the deadlock.

During her press conference, Ashton also expressed disappointment at the failure of the talks. "The door remains open, the choice remains in Iran's hands," she said.